Abstract: A method for spreading a spraying liquid onto arable agricultural land by way of several switching elements arranged on an agricultural sprayer and controllable in an open-loop and/or closed-loop manner and in the manner of a pulse width modulation, where the spraying liquid is spread as required onto the arable agricultural land; where a first opening duration associated with a first switching element and at least one further opening duration associated with a further switching element is determined; where spreading the spraying liquid is influenced at least in part by way of the respective opening duration; where at least one upper and/or lower limit opening duration associated with the switching elements is used; and where the first and further determined opening duration is compared with the upper and/or lower limit opening duration.

Abstract: A method for spreading a spraying liquid onto arable agricultural land by way of several spreading devices associated with a field sprayer; and arranged along a spraying boom, where the spraying liquid; is applied with a needs-based spreading quantity that is associated with the respective spreading devices where at least one first operating parameter associated with at least one first spreading device; and at least one second operating parameter associated with at least one second spreading device is determined, and where a difference between the operating parameters is ascertained and/or detected, and where the first and/or second operating parameter is adjusted if the difference is outside an acceptance range, where the difference is within the acceptance range after adjustment.

Abstract: A method for actuating a solenoid valve, which is used for throughflow rate control, of an agricultural spreading machine, wherein the solenoid valve has a valve armature, comprising: energizing the solenoid valve in order to cause an opening movement of the valve armature and/or in order to hold the valve armature in an open position in which the solenoid valve is open, interrupting or changing the energization of the solenoid valve in order to cause a closing movement of the valve armature in the direction of a valve seat, and causing a reduction in the movement speed of the valve armature during the closing movement of the valve armature.

Abstract: A method for controlling valves of a spraying boom of an agricultural spreading machine, comprising the steps of: generating valve-specific voltage signals for controlling several valves arranged on the spraying boom and providing the valve-specific voltage signals to the a respective valve, wherein the valve-specific voltage signals are pulse width modulated and each have a valve-specific duty cycle, where the valve-specific duty cycles compensate for or reduce influence, which is dependent on the position of the respective valves on the spraying boom, on the valve-specific flow volume of spraying liquid.

Abstract: The invention relates to a method for matching the operation of an individualizing device (26) and the operation of a portioning device (14) of an agricultural dispensing machine to each other in order to achieve a specified local depositing ratio (?x) when depositing seeds (K) individualized by the individualizing device (26) and fertilizer portions (P) produced by the portioning device (14) on a usable agricultural area (N), having the steps of: depositing individualized seeds (K) and produced fertilizer portions (P) onto the usable agricultural area (N) using the agricultural dispensing machine as part of a calibration drive and detecting the depositing positions (PK, PP) of the seeds (K) and fertilizer portions (P) deposited during the calibration drive and/or the local depositing relationship (?xK) thereof using a mobile testing device (54).

Abstract: An agricultural machine for the combined application of seed and granulate on an agricultural area includes a separating device, a portioning device, and a control device. The separating device has a rotationally drivable separating element for separating seed grains and the portioning device has a rotationally drivable portioning element for producing granulate portions. The control device matches the rotational movements of the separating element and the portioning element to each other to implement a predetermined depositing relationship of the seed grains and the granulate portions on the agricultural area.

Abstract: An agricultural application machine for the combined application of seed and granulate on an agricultural area includes a separating device a portioning device, and a control device. The separating device has a rotationally drivable separating element for separating seed grains and the portioning device has a rotationally drivable portioning element for producing granulating portions. The control device matches the rotational movements of the separating element and the portioning element to each other to implement a predetermined depositing relationship of the seed grains and the granulating portions on the agricultural area.